| 摘要 |
<p>PURPOSE:To perform writing operation in real time without any influence of reading operation by controlling timing switching operation between the writing and reading of a main storage circuit with a readout end signal and a write end signal. CONSTITUTION:A subordinate storage circuit 2 fetches a radar video signal successively with a sampling clock and sends out a request-to-write signal to a write control circuit 3 when the fetching operation is completed. The write control circuit 3 monitors the readout end signal sent out of a readout control circuit 5 and perform writing to the main storage circuit 4 only when the readout end signal is outputted. The readout control circuit 5, on the other hand, starts reading operation with the write end signal. Consequently, the radar video signal is written in real time without any influence of the reading operation. Further, a trigger pulse for transmission are made irrelative to the main device, so the limitation of the trigger pulse for transmission is relaxed.</p> |
